Ernest Menville: Where did you put my wife?
Second Doctor: She's dead, sir. They took her to the morgue.
Ernest Menville: The morgue? She'll be furious.
Lisle: We are creatures of the spring, you and I.
Helen: Oh ok! Well if she's not dead, you tell her to come down here, come right up to me and kiss me on the.
Madeline: Kiss you on the what?
Helen: Mad?
Madeline: Hel.
Madeleine: You're dressed. Special occasion?
Helen: I will not speak to you 'til you put your head on straight.
Lisle: Drink that potion, and you'll never grow even one day older. Don't drink it, and continue to watch yourself rot.
Helen Sharp: On guard, bitch.
Madeleine: Oh, it's you.
Ernest: Fine, dear, thank you, like a rock.
Helen: You have no talent for poverty.
Answer: They were warned earlier in the film that they needed to take care of their bodies. But obviously, they put them through a lot of abuse. They didn't take care of themselves, needing to be patched up frequently and whatnot. As a result, at this point, their bodies are like living mannequins more than human bodies. They simply break apart with force, such as falling down the stairs.
TedStixon